Systems

 

 

Integrated electrical and low-voltage systems of all types—inside and outside a building—encompass the range of work that electrical contractors do. The articles in this section highlight different types of work, from security, fire and life safety, to traditional electrical power and distribution, to lighting, cabling and more. 

Figure 1: Power quality phenomena over the voltage range

The lights blinked for an instant, or a running appliance made a sound like the motor was slowing down. No digital clocks were blinking, no computers restarted, no production lines stopped.

Security systems solutions are designed to keep customers and their facilities safe, detect intruders, and obtain visual evidence and identification.

Many contractors have said to me, “The fire alarm system is supervised, and I have a green light on the fire alarm control unit.

A new piece of software developed by students will make streetlight outage detection a lot easier and faster for the City of Las Vegas.

More on Systems

 
Cabling on a Shoestring

It doesn’t always take cutting-edge technology to launch new applications, although that certainly has been the case for the most part in low-voltage in recent years.


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Saved by the Bell

Educational construction continues to lead the non-residential market in new construction spending.


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Wiring Air Conditioning and More

CODE CITATIONS Article 210 Branch Circuits Article 250 Grounding Article 300 Wiring Methods Article 310 Conductors for General Wiring Article 334 Nonmetallic Sheathed Cable: Types NM, NMC and NMS Article 422 Appliances Article 518 Places of Assembly Article 700 Emergency Systems Wiring air condition


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Fiber Optic Update

Fiber optics, as we all know, has not had a very good time the last couple of years, with the overall market dropping by almost 80 percent (see chart at top right).


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Installing a Service Disconnect

Many changes have occurred to the National Electrical Code (NEC) since the first NEC was published on Aug. 31, 1897. Even though the electrical industry was in its infancy, this “first” NEC was remarkably insightful and has withstood the test of time.


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IBS: Here Today, Here to Stay

Over the past few months, many progressive contractors have told me that becoming increasingly involved in the Integrated Building Systems market has been one of their primary business goals––and it’s a step in the right direction.


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Voice and Data Systems Converge

The telephone and networked personal computer (PC) have become indispensable tools in today’s fast-paced business environment.


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